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Replace radio without disconnecting ground?

 
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  #1 (permalink)  
Old 22 Jul 2013, 09:37 am
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Default Replace radio without disconnecting ground?

can i replace my radio without disconnecting the ground battery cable?
and why they recommend to do that before any installation?

Thank you.
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Old 22 Jul 2013, 10:55 am
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Exclamation Re: Replace radio without disconnecting ground?

It's not that difficult....Why do you NOT want to disconnect the negative terminal?.....But,to answer your questions.
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Originally Posted by gramicci View Post
can i replace my radio without disconnecting the ground battery cable?.
Technically speaking....Yes you can,if you at least pull the 'IOD Feed Radio' fuse #20(15A Lt. Blue)....BUT!!..Since you have a Gen-2(2006-2010)PT Cruiser which utilizes the CAN-BUS system with the PCM/ECU....I would HIGHLY recommend it!,and also after disconnecting the Neg. terminal step on the brake pedal 2-3 times to remove any residual charge...... I know I would do this it if it were my PT,Gen-2 or not.(because I have!)
Quote:
Originally Posted by gramicci View Post
and why they recommend to do that before any installation?
Since most modern cars now use PCM/ECU to control almost all electrical functions,any surge in power(even static electricity!)especially vehicles with CAN-BUS systems can cause all kinds of problems ranging from minor to serious.
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Old 22 Jul 2013, 06:22 pm
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Default Re: Replace radio without disconnecting ground?

Interesting!! Thank you for your answer sir.
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Old 22 Jul 2013, 06:48 pm
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Default Re: Replace radio without disconnecting ground?

Disconnecting the battery negative lead is good practice when doing ANY vehicle mechanical or electrical work. If you were to even momentarily make a wrong connection or get a connector misconnected you could do a lot of damage...the starter could even crank the engine with your hand in a pulley or fan or with you under the car...too many bad things could happen.
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Old 22 Jul 2013, 07:27 pm
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Default Re: Replace radio without disconnecting ground?

It's not a big deal. Key off there isn't any risk. Installed many with out pulling the battery.
randyincctx likes this.
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Old 22 Jul 2013, 10:12 pm
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Smile Re: Replace radio without disconnecting ground?

Quote:
Originally Posted by Busted_PT View Post
It's not a big deal. Key off there isn't any risk. Installed many with out pulling the battery.
I'm guilty of it also......You & I(and many others)could/and have done it....I just didn't want to recommend it to someone else(without knowing their capabilities),and have them come back to say: "You told me it was OK;Now my PCM is fried!"....LOL
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Old 23 Jul 2013, 07:09 am
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Default Re: Replace radio without disconnecting ground?

I just installed a new Kenwood head unit in my 09 and Rockford Fosgate speakers in the doors. I too think its a good idea to unhook the battery but in my case I forgot and things went fine.
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Old 24 Jul 2013, 10:05 am
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Default Re: Replace radio without disconnecting ground?

I forget and end up blowing the fuse half the time. Maybe more than half. Lol
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Old 25 Jul 2013, 05:46 am
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Default Re: Replace radio without disconnecting ground?

Randy; #2 post. I like it.
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